Spindle for gelatin rolls



May 1, 1928.

QQ M

W. E. WILLIAMS SPINDLE FOR GELATIN ROLLS Filed March '7, 1925 PatentedMay 1, 1928, 6

UNITED STATES WILLIAM ERASTUS WILLIAMS, 0! 'WILMETTE, ILLINOIS,ASSIG'NOR 'IO DITTO, IN-

I 1,667,916 PATENT OFFICE.

CORPORATED, OF CHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

SPINDLE FOR GELATIN ROLLS.

Application filed March 7. 1925.

My invention relates to the spindles used for gelatin rolls that. areused for copy printing on the hectograph principle and the object of theinvention to produce a simple and cheap spindle that will havesufficient strength and normal life. to be equivalent to the normalservice. of the roll which is wound upon the spindle, the point being tomake the spindle as cheaply as will render the service for any givensingle unitary use of a gelatin roll as a matter of economy in savingexpense.

The hectograph principle of making copies from a. gelatin pad has beenhighly developed in the form of putting a thin gelatin coating upon asheet of waterproof paper or cloth and then making this in the form of aband of suitable length winding the band upon itself upon a spindle.

These rolls as bands as normally used run in lengths of about 15 feetand when wound on the spindle they make a roll body of four to four andone-half inches in diameter, de pending, of course, upon the desire andpurpose for which the gelatin rolls are used.

It has been the practice of some manufacturers to make the spindles uponwhich these gelatin rolls are wound and carried in transitof a form thatis adapted to be inserted in a. machine and the roll to be wound andrewound upon this same spindle which, as it were. becomes a part of thegelatin sheet unit itself.

Thus in making these spindles of a form that is adapted to be used in amachine the spindle becomes quite an item of cost and by my invention Iseek to bring about a. saving in the service rendered in thisconnection.

Reference will be had to the accompanying drawing in which 1 is anelevation of a gelatin roll wound upon one of my spindles.

Fig. 2 is an enlarged view showingavertical section through the end ofone of these spindles on line 2-2 of Fig. 3.

Fig. 8 is a transverse view of the end of the spindle on line 33 of Fig.2.

Fig. 4 is a longitudinal vertical sectional elevation of a tool that isused in making perforations in the ends of the spindle tubes.

Fig. 5 is a transverse section on line 5-5 of Fig. 4.

Fig. 6 is a transverse section on line 6-6 of Fig. 4.

Fig. 7 is an elevation of that portion im- Serial No. 14,353.

mediately adjacent to the section of Fig. 6 looking in the direction ofthe arrow (1 Heretofore the spindles of this class have been made out ofwood and there has been provided some metal gudgeons which have beenfastened into the-ends of the. wood in a permanent association.

The gudgeons were provided with small cylindrical shaft end pieces 1integrally with a flat metal plate piece 2 and this flat plate piece wasextended into a slot in the body of the wooden spindle and rivetedtherein. (Thislast feature not shown in drawing.)

In place of the wooden spindle, I provide a tubular paste board spindleindicated by 3, made out of straw board or other suitable material andonto this spindle the gelatin roll 4 is secured and wound.

In place of the fixed gudgeons used with the wooden spindles, I providesome removable gudgeon plugs or blocks having the same spindle ends 1and fiat metal plate surfaces 2, but these pieces are secured in orbecome a part of a metal plug made in any suitable form and designed andadapted to be inserted into the hollow ends of the tube spindles 3.

These plugs or blocks here shown are composed of the body piece 5 intowhich the fiat metal piece 2 is either inserted or becomes part of andthis body piece 5 is provided with an end flange 6.

Over the body piece 5 there is secured a tubular plug end 7 which fitssnugly over the body piece 5.

In the body piece 5 there are some small holes or cavities 8 in each ofwhich is mounted a spring 9 which abuts and forces outward a small plug10 which carries an outwardly projecting knife edge blade 11. The

portions 10 substantially fill and slide freely within the cavities 8and when the gudgeon pieces are assembled the knife edge blades 11 arepressed inward entirely within the cavity 8 in the body piece 5 and thispermits the tubular piece 7 to be threaded over the. ends of the knifeedge blades 11 into cavities substantially the shape of these blades,and thus as it were, lock the body piece 5 and the tubular plug end 7into a. unitary gudgeon.

The paste board tube spindles 3 are apertured at their ends toaccommodate the entry of the knife edge blades 11 and in order to permitthe gudgeons to be entered in the ends of the tubes 3 and also to assistin assembling the body piece 5 and the tubular plug end 7, the knifeedge blades 11 are rounded on one edge as indicated by 12, Fig. 2.

In the use of the roll 4 in a machine the round ends 1 and the flatsurface 2 are engaged in the machine and are revolved on these endpieces in the unwinding and winding up of the rolls on the spindles, theflat end pieces 2 furnishing the means for bolding the spindle againstrotation when desired, and for positively revolving it in winding up andunwinding the rolls on the spindles.

\Vith the wooden spindles the gudgcon pieces as above stated are fixedin the ends of the spindles, but with the tubular spindles of pasteboard the knife edge blade 11 of the blocks 10 being entered into theapertures 13 in the ends of the tubes furnish a sufiicient bond of mygudgeon with the spindle tubes to render the services needed in the workof winding and unwinding the rolls 4 and holding the rolls against suchmovement during the use of any given section of the roll in the art ofcopy work.

The gudgeons as I have shown them are furnished in sufficient number toeach machine owner to provide gudgeons for a sufiicient stock of rollsand spindles that any one user may have on hand at any given time. Thenas the roll 4 wears out instead of throwing away the rolls and thewooden spindles heretofore used along with the rolls, or returning thespindles t at carry with them the metal end plates 1 and 2, they simplywithdraw these gudgeons from the ends of my paste board tubes andreinsert them in the new spindle tubes that come with the new rolls, sothat any one user of a machine for doing this copy work with these rollsand my spindles need-buy only a number of these removable gudgeons andinsert them into and withdraw them out of the paste board spindles asrequired as the rolls are worn out and renewed.

The knife edge blades 11 on being withdrawn from the ends of the tubescut themselves through the paste board, thus, as it were, assisting inremoving the gudgeons.

These paste board spindles are made as cheaply as possible and areprotected by a slight coating of suitable material being a wax,depending on the desire of the maker, that will prevent their break-downunder moisture that may come from the association of the spindle withthese gelatin rolls which are continually moistened in service.

In withdrawing the gudgeons from the ends of the rolls I prefer to use ahook which is inserted in the hole 14, Fig. 2, which thus will give apurchase that will enable the o erator to withdraw the gudgeons and cutt e ends of the paste board tubes out as the knife edge blades 11 arewithdrawn outwardly.

For the sake of economy, the paste board tubes 3 are made so light thatit would be unwise for any person to use these tube s )indles a secondtime and to emphasize this iact, the ends of the tubes are cut asdescribed in withdrawing the gndgeons.

\Vhereas, with the old style of wooden rollers the metal end piece whichwent with the spindles all the time performed the. service of wearingout a single gelatin lu'el roll, with my removable plug gudgeons thesame set of gudgeons may be used as often as the operator may wish andnot be compelled to buy wooden spindles for each gelatin roll and inthis respect there is a great saving in expense by my invention.

In order to ropcrly perforate or make the, apertures in tlie ends of thetubes, to fit the knife edge blades 11., I provide a simple hand toolshown in Figs. 4, 5, 6 and 7, romposcd of a wooden handle piece 15 fixedinto a block 16 into which is fixed a tube piece 17 adapted to beentered into the inside of the tubular spindles 3.

This tube piece 17 is provided with apertures 18 adapted to become thefemale dies for a series of punches 19 which are a part of blocks 20hinged on a circular wire 21 extending around the block 16.

The block 16 is apertured to seat and guide the blocks 20 by theapertures 22. The blocks 20 are provided with cross pins 23 adapted tolimit the travel of the blocks 20 on their inward stroke cutting thelittle apertures into the ends of the tubes 3.

These blocks 20 are forced home in the punching action by any suitablemeans such as a hammer that is used to drive in a single one of them ata time or by a ring cam block which may slide over the body of the block16 and enga e all three of these blocks 20, simultaneous y, and thusbring about the perforation of the ends of the paste board tube pieces 3as desired.

The roll body 4 is provided with any suitable means to hold the same ina wound up condition in the handling and storing of these rolls outsideof the machine, but I have here shown a strap 24 the end of which isentered into some tuck-keeper portions 25, see Fig. 1.

This feature of the roll device is the subject of another applicationfor Letters Patent.

What I claim is:

1. In a device of the class described, gudgeon blocks adapted to beinserted on the inner ends of tubular spindles and provided with springactuated radially projecting blocks adapted to prevent rotation of thegudgeon blocks as relates to the spindle and to be sprun into the endsof t e tubular spindles an to cut their way out in the material of thetubular spindles as the blocks are withdrawn from the spindles.

2. A tubular spindle provided with gudgeon plugs mounted in the endsthereof in demountable fashion and said gudgeon plugs composed oftubular plug end pieces provided with a plurality of radial aperturesinto which are secured body pieces and said body pieces carrying radial0utwardly pressed projections having lateral cutting edges extending outthrough said apertures in the tubular end pieces and said body pieceshaving end trunnions upon which the plugs and spindles are carried andrevolved in the service of the spindle.

3. A tubular spindle of fragile material having radial apertures neareach end, adapted to be engaged at its ends by gudgeon blocks indetachable arrangement, gudgeon blocks adapted to extend into the endsof the said tubular spindle for a distance at each end and said blockshaving flanges adapted to abut against the ends of the tube and be heldin place within the tube by the means of radially extending projectionsprovided with lateral spindle cutting edges on the gudgeon blocksentering apertures in the walls of the tube.

4. A tubular spindle; in combination with gudgeon blocks adapted to beinserted in and withdrawn from the ends thereof and said blocks rovidedwith radially extending knife e ge projections adapted to engage thespindle against rotation and cut their way out on their withdrawal fromthe tube.

5. A tubular spindle of relatively fragile material provided with radialapertures near each end, provided with gudgeon blocks located in theends thereof and engaged to the spindle by projections provided withlateral cutting edges passing through apertures in the walls of thespindle and said projections adapted to spring into the ends of thespindle and cut their way out on the removal from the spindle.

G. In a device of the class described, a gelatin roll strip secured toand wound upon a tubular spindle and the said spindle composed ofrelatively fragile material for a single service feature, with gudgeonblocks adapted to engage the ends of the said spindle by means ofresiliently pressed radial projections provided with lateral cuttingedges on the gudgeon blocks, and said projections adapted to damage theends of the spindle to permit the removal of the gudgeons from thespindles.

Signed at Chicago, in the county of Cook and State of Illinois, this 5thday of March, 1925.

WILLIAM ERASTUS WILLIAMS.

